Deutsch-Chinesische Enzyklopädie, 德汉百科

       
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SM Mall of Asia
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Smaragd
绿宝石,祖母绿
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祖母绿被称为绿宝石之王，是相当贵重的宝石(五月的诞生石)，国际珠宝界公认的四大名贵宝石之一（红蓝绿宝石以及钻石）。因其特有的绿色和独特的魅力，以及神奇的传说，深受西方人的青睐。近来，也愈来愈受到国人的喜爱。在众多硅酸盐矿物中，唯独祖母绿的色彩最为引人，所以倍受喜爱。
祖母绿象征着仁慈、信心、善良、永恒、幸运和幸福，佩戴它会给人带来一生的平安。它也是结婚55周年的纪念石。
祖母绿是很古老的宝石，在古埃及时代就已用做珠宝。
中文名
祖母绿
外文名
emerald
颜    色
绿色
美    称
绿宝石之王
化学成分
铍铝硅酸盐 
晶    系
六方晶系 
光    泽
抛光面玻璃光泽
光    性
一轴晶负光性 
折射率
1.577-1.583（±0.017） 
双折率
0.005-0.009
硬    度
7.5-8
相对密度
2.67-2.90
 
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Sony
索尼
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Sotheby`s
苏富比
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Specks Hof
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Speedo
速比濤 速比涛

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Spiegelau
德国最著名玻璃器皿

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Spinell
尖晶石
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尖晶石是镁铝氧化物组成的矿物，因为含有镁、铁、锌、锰等等元素，它们可分为很多种，如铝尖晶石、铁尖晶石、锌尖晶石、锰尖晶石、铬尖晶石等。由于含有不同的元素，不同的尖晶石可以有不同的颜色，如镁尖晶石在红、蓝、绿、褐或无色之间；锌尖晶石则为暗绿色；铁尖晶石为黑色等等。尖晶石呈坚硬的玻璃状八面体或颗粒和块体。它们出现在火成岩、花岗伟晶岩和变质石灰岩中。有些透明且颜色漂亮的尖晶石可作为宝石，有些作为含铁的磁性材料。用人工的方法已经可以造出200多个尖晶石品种。
中文名
尖晶石
外文名
spinel
类    别
氧化镁铝
化学式
MgAl₂O₄
分子量
142.26
颜    色
红、橙红、粉红、紫红、无色、黄、橙黄、褐、蓝、绿、紫等
光    泽
玻璃光泽
透明度
透明至不透明
晶    系
等轴晶系
解    理
不完全
断    口
贝壳状断口
硬    度
8
晶体惯态
八面体晶形，有时八面体与菱形十二面体、立方体呈聚形
比    重
3.60，含Zn高的品种可达4.60
特殊性质
星光效应稀少，变色效应
折射率
1.718（+0.017，-0.008）
光性特征
均质体
 
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Spodumen
锂辉石
锂辉石属单斜晶系，晶体常呈柱状，粒状或板状。颜色呈灰白、灰绿、紫色或黄色等，硬度6.5-7，密度3.03-3.22g/cm3。 作为锂化学制品原料，广泛应用于锂化工、玻璃、陶瓷行业，享有“工业味精”的美誉。
 
中文名
锂辉石
外文名
spodumene
别    称
工业味精
光    泽
玻璃光泽
硬    度
6.5～7
矿物密度
3.03～3.22g/cm3
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Springfield

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St James Street
圣詹姆斯街
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Steingraeber & Söhne
斯坦格列泊索纳钢琴

 


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